I'd never use double ply in the Lakes or Peaks* but I suppose it depends on how you attack the rocks aswell as how heavy you are. You could always go for a thicker walled single ply ie lower TPI number - fewer turns per inch so the "threads" are thicker.

*Did split a Nobby Nic sidewall last year though, changed it to a Snake Skin version...

Nog you'd be fine on single ply I'm another 3 stone heavier than you only tyre I've had problems with was a Spesh Resolution, brand new and first ride I split it at CyB. But that place is a wrecker of Tyres over 2 days 6 riders and about 10 punctures.

As for the 200 grams thats approaching 1/2 a pound a wheel and thats weight where it materes the most on a bike, rotational mass unsprung weight etc.

I ride in the lakes all the time.  You dont 'need' dual ply tyres unless you really are ham fisted tbh.  Places like grizedale and walnar scar you may get a few cuts in the carcass but i would expect a single ply tyre to cope.  Better to ride with a tyre boot for emergencies instead (I use a piece of old toothpaste tube which has been in the bag for about 3yrs).

I have used the kenda blue groove/nevegal combo for years and swear by it.  Nothing is more predictable as the blue groove on the front in the lakes.

High Rollers are the shoe equivalent of a good pair of Vans.

Supertacky 42a front

Maxxpro 60a rear

Singleply unless you're getting a lift to the top o' the hill. 

Can you get Swampthings in a singleply? I thought they were dualply only.

That's what I said Jimmy!

(and yep you can get swampys in single ply but they feel odd imo..squirmytastic!)

(and I thought I'd get away with single plys at Molfre..... got 3 pinch flats and only rode the saturday )

Aye, get some duals and change 'em for uplift days, much more stable.

I can imagine how a single ply Swamp would feel. I always feel the duals are a little squirmy unless it proper muddy, any rock and I get a bit nervous. 

ha ha !

yes it seems High Rollers are a good fail-safe option...

i live and ride in the lakes and tyres are hard to choose for all round riding,

for ages i rode a minion (slow rezay) up front and a high roller (super tacky)

on the back which meant i had superfantastic grip everywhere but pedalling them was an arse  , especially when they're both dual ply?????

i chose to try some new specialized eskar armidillo's (2.3) and have to admit they

are the dog's danglies in wet or dry conditions!!

also they roll really well so no more sweating buckets??

coming just short of £30 each though they aren't cheap....